package com.sky.aspect;


import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    /**
     * 拦截需要自动填充的类
     * @param
     */

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointcut() {


    }

    @Before("autoFillPointcut()")
    public void autoFill(JoinPoint joinPoint) {
        log.info("开始进行数据填充{}", joinPoint);
        //  获取参数
        MethodSignature signature = (MethodSignature)joinPoint.getSignature();//  获取方法签名
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);// 获取注解
        OperationType operationType = annotation.value();// 获取操作类型
        Object[] args = joinPoint.getArgs();// 获取参数
        if (args == null || args.length == 0){
            return;
        }
        Object entity = args[0];
        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        if (operationType == OperationType.INSERT){
            //  填充创建时间、更新时间、创建人、更新人
            try {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setCreateTime.invoke(entity, now);
                setUpdateTime.invoke(entity, now);
                setCreateUser.invoke(entity, currentId);
                setUpdateUser.invoke(entity, currentId);
            } catch (Exception e) {
                e.printStackTrace();
            }

        }else if (operationType == OperationType.UPDATE){
            //  填充更新时间、更新人
            try {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                setCreateTime.invoke(entity, now);
                setUpdateTime.invoke(entity, now);
            } catch (Exception e) {
                e.printStackTrace();
            }

        }
    }
}

